Holder for tubular supports for coils of strand materials



June 2, 1936. w. slvEGENTHALER 2,042,968

HOLDER FOR TUBULAR SUPPORTS FOR COILS OF STRAND MATERIALS Filed Maron28, 1935 2 sheets-'sheet 1 HG2 i 9 4 24. 22 72 fa 77 f6 Z 6 2 Y i- A,

June 2, 1936. w. slEGEl\1Tl-lA| 1-:R 2,042,958

- HOLDER FOR T'UBULAR SUPPORTS FOR COILS OF STRAND MATERIALS Filed March28, 1935 2 Slleers-Sheet-?v Patented June 2, 1936 UNITED STATES PATENToFFlcs HOLDER FOR TUBULAR SUPPORTS FOR COILS OF STRAND MATERIALSApplication March 28, 1935, Serial Nof. 18,581 In Switzerland April 21,1934- 3 Claims.

This invention relates to holders for tubular supports which are to' bevWound with strand materials and which are held in' position by action ofspringy annular retaining means on the inner IiY surfaceA of thesupports.

It is known to arrange the mounting for the retaining spring in fixedmanner on' the supporting or driving shaft of the holder. But, since thetubular supports' for the coils.` diier` in regard to the diameter oftheir bore andf.. consequently, the retaining spring shifts-on themounting thereof more or less While a coil support is pushed on theholder ther windings are spaced apart different distances from therespective edge of the-tube during the operationA of winding the` coilvsupport. Thus, the coils occupy different relative positions on thedefinitely Wound tubes which fact involves certain inconveniences whenthe tubes are subsequently set in place in other mazuchines and thecoils are subjected to an aftertreatment.

According to this invention, this drawback is eliminated in the holderby providing an abutment for the tubular coil support and arranging themounting of the annular retaining spring to be axially displaceable. Thecoi-l support bears against the abutment so that the retaining spring,due toA coopera-tion with the mounting, is forced outwards against thecoil tube' for the purpose of obtaining a uniform disposition of thecoils on the tubes that are wound in one andthe same'machine. A furtherfeature of the-invention consists in the provision of arranging severalannular re taining springs in an axial row' and correlating toeachspring a separate axially displaceable mounting which on the coil tubeentering into bearing engagement withv the abutment provided thereforforces the corresponding retaining spring outwards. Thus the coil tubesare safely retained even with the diameter of their bores differing.

In the drawings two oonstructional forms of the invention areillustrated by way of example only, in which Fig. l shows in alongitudinal section a first example of the holder prior to a coil tubebeing set in place thereon;

Fig.V 2 showsl the same longitudinal section but 50- after a coil tubehas been mounted thereon, viz.

in the operative condition of the holder;

Y Fig. 3 shows in a longitudinal section a second example of the holderin the operative condition thereof;

Fig. 4 shows the same longitudinal' section. in

the condition of the individual parts of thev holder permitting mountingor dismounting a` coil tube, and

Fig. 5 is a cross-section on the line V-V in Fig. 3.

In the rst constructional example of the invention, as shown in theFigs. l` and 2, I designates a supporting or driving spindle which maybe assumed toy bey the winding spindle of a winding machine. On thespindle I is arranged an abutment 2 to be axially adjustable by means ofscrews 3,v the abutment being provided with an engagement face 4. Withina recess of the abutment 2 the spindle If carries an adjusting ring 5 tobe displaceable thereon with the aid of a set screw 6. A coiledunlocking spring 'I is secured to said ring with on'e end, while theother end of this spring is fastened to a mounting 8 which is axiallydisplaceable relatively to the spindleV I.. The mounting 8 is providedwith a conical' circumferential portion 9 and ca-rries a contractileretaining spring I' which is formed by a ring; shaped helical spring.. Abacking sleeve I:I slid on the spindle I serves for receiving thetubular support or cop tube. I2 to be Wound with a strand material. Thetube may for example consist of cardboard. and be conically shapedconforming to the circumference of the backing sleeve II.

The end of the spindle IV remote from the winding machine isv providedwith a bore I3 and a guide plug I4 for a sliding pin i 5 which is'freely accessible'- fromoutside.V This sliding pin I5 is formed at itsend situated inside the bore I3 of the spindle Iv with a conical head I6which merges with a cylindrical portion I'I. This con'- ical head I6-and the cylindrical portion Il of the pin I5 cooperate with frictionballs I8 which are located in recesses of the thickness of materialsurrounding the bore I3. The friction balls I8 are associated with thebacking sleeve Il which is provided with a recess I9 serving forcooperation with the friction balls and being limited at one end by arounded shoulder 20. The parts Ifl, I8, I and I5 form together afriction ball locking device the sliding pin I5 of which is influencedby a compression spring 2 I. On the sliding pin a socket 22 isdisplaceably arranged which overlaps the guide plug I4 with itsrespective end, so as to be adapted to cooperate with the backingsleeve, when pressure is exerted on the exterior end' of the socket 22by meansof a tubular piece 23 having a handle 24.

In Fig. 1 the friction balls I8 are shown to be moved past the innerendof the recess I9 of the backing sleeve I I and to rest on the conicalhead I6 of the sliding pin I5 which is pulled outwards against theaction of the compression spring 2l. The backing sleeve I I is urged bythe compression spring 'I against a flange of the plug I4. This spring Iacts on the mounting 8, through the intermediary of the retaining springIU mounted on the conical circumferential portion 9. A cop illibe I2 isloosely mounted on the backing sleeve In order to secure the cop tube I2on the holder, the handle 24 of the tubular piece 23 is gripped andpressure is exerted on the socket 22 by means of said piece, the socketin turn acts on the backing sleeve II to shift the same in the axialdirection. During this shifting movement of the backing sleeve II theretaining spring I9 is displaced on the conical circumferential portion9 of the mounting 8 and thus tensioned, whereby this spring is firmlypressed against the interior surface of the cop tube I2 and the latteris retained in position.

Thereupon the backing sleeve I I shifts together with the mounting 3against the influence of the compression spring I until the end of thecop tube I2 bears on the engagement face 4 of the rigid abutment 2.During the axial shifting movement of the backing sleeve II the recessI9 thereof cooperates with the friction balls I8, when the latter enterinto the recess I9 by being forced outwardly by the conical head I6 ofthe sliding pin I5 which is then correspondingly axially displaced bythe compression spring 2I correlated thereto. Consequently the frictionballs come to bear against the cylindrical portion II of the sliding pinI 5 and are thus secured in locking position, so that also the holder assuch is locked in position of operation.

On the cop tube I2 being completely wound, the sliding pin I5, the outerend of which is freely accessible after the removal of the tubular piece23, is pulled outwards by hand against the action of the compressionspring 2|. At the same time the mounting 8 and the backing sleeve I Iare axially displaced by action of the spring 'I in the directionopposite to the previous axial shifting movement of these parts, thebacking sleeve II urges the friction balls I8 radially inwards by meansof its rounded shoulder 20, in accordance with the displacements of thesliding pin I5.

The backing sleeve I I returns during this axial resetting movement intoa position in which it bears again on the flange of the guide plug I4.The retaining spring I9 follows this resetting movement of the backingsleeve by effect of its tendency to contract elastically until itreassumes the position on the conical circumferential portion 9 of themounting 8 shown in Fig. 1. The cop tube I2 i. e. the definitely woundcop mounted on the backing sleeve II thus being cleared by the retainingspring I6 can now be readily removed from the holder by hand without anyfurther manipulations being required. At the same time the holder isagain in condition for receiving a fresh cop tube to be wound which isthen mounted and secured thereon in the same manner as previouslydescribed. Due to the fact that during Winding the cop tube bearsagainst an abutment so that cops are obtained on one and the samemachine having windings of a uniform disposition relatively to thesupporting tubes throughout.

In the constructional example shown in the Figs. 3 to 5 the supportingand driving spindle 25 carries an abutment 26 which is provided with anengagement face 2'! for bearing against a cop tube 28. An axiallydisplaceable mounting 29, which projects to some extent into a recess ofthe abutment 26, is provided with a conical circumferential portion 30which is in bearing contact with a retaining spring 3l which restsagainst an engagement face 32 of the abutment 26. A second axiallydisplaceable mounting 33, which enters to some extent into a recess ofthe mounting 29, is of a shape similar to the mounting 29, a conicalcircumferential portion 34 being provided thereon which is in bearingcontact with an annular retaining spring 35 resting against anengagement face 36 of the mounting 29. In a like manner a third axiallydisplaceable mounting 3l projects partially into a recess of themounting 33 and is provided with a conical circumferential portion 38for the reception of an annular retaining spring 39 which bearsrearwardly against an abutment face 40 of the mounting 33. A helicalspring 4I serving for axially displacing the mounting 33 enters with oneof its ends into a depression of the mounting 3'I, whereas the other endof this spring bears against the head of a screw 42 screwed into thefree end of the spindle 25. For displacing the mounting 31 against thepressure of the spring 4I, two rods 43 are provided which are passedthrough holes in the mountings 33 and 29 and in the abutment 26. adisplaceable ring 44 which cooperates with a forked adjusting member 45mounted on a pivot 46 and is adapted to be rocked against the action ofa spring 48 by means of a bar 41 of an actuating mechanism not shown inthe drawings.

In the operative condition of the holder (Fig. 3) the annular retainingspring 39 is displaced so far to the left on the conical circumferentialportion 38 of the mounting 31 that this spring is tensioned incooperation with the spring 4I acting on the mounting 37 and thus isforced against the inner surface of the cop tube 28. The spring 39 isadapted at the same time to exert pressure on the engagement face 40 ofthe mounting 33, so that the annular retaining spring 35 is maintainedin tensioned condition on the circumferential portion 34. The latterspring is adapted to exert pressure on the inner surface of the cop tube28 in a like manner as the annular spring 39 and on the engagement face36 of the mounting 29.

By effect of this pressure exertion on the mounting 29 again in a likemanner the annular spring 3I correlated to this mounting is maintainedin tensioned condition on the conical circumferential portion 38 andthus is urged on the inner side of the cop tube 28, While bearing at thesame time against the engagement face 21 of the abutment 26.Consequently, in this construction of the holder all the annularretaining springs are uniformly tensioned, so that even with the innerdiameters of the various cop tubes differing the tubes are safelyretained in position.

In order to don a cop tube in position on the holder or to doff a tube,by means of the adjusting member 45 the ring 44 is shifted from theposition shown in Fig. 3 into that shown in Fig. 4. In this way themounting 3'I is displaced by means of the rods 43 against the pressureof the spring 4I, thus permitting the annular spring 39 on the conicalcircumferential portion 38 to release. At the same time the mountings 33and 29 follow the shifting movement of the mounting 31, thus alsopermitting the annular springs 35 and 3I to bear on the correlatedconical circum- These rods are secured to ferential portions withreduced pressure. The thus released annular springs are prevented frombearing on the inner surface of a cop tube 28 which is mounted on theholder so as to rest against the engagement face 21.

Instead of transmitting motion from the ring 44 to the mounting 31through the rods 43 another construction may be used in which thetransmission members comprise, for example, a sleeve which is mounted onthe spindle 25 and is caused to abut against the mounting 31, thissleeve carrying the mountings 29 and 33 in displaceable manner and beingconnected with the ring 44 by means of rods passed through the abutment2B.

I do not limit myself to the particular size, shape, number orarrangement of parts as shown and described, all of which may be variedWithout going beyond the scope of my invention as shown, described andclaimed.

What I claim is:

1. In a holder for tubular supports for coils of strand materials, thecombination with several annular retaining springs arranged in an axialrow for engaging the inner surface of a tubular coil support, arotatable driving spindle for said coil support, and separate mountingsaxially displaceably arranged on said driving spindle for cooperationwith each of said springs, of an abutment for said tubular coil supportwhereby each mounting forces the correlated spring outwards intoengagement with said support to retain the latter safely in position onsaid driving spindle by bearing on said support notwithstanding theinner diameters of the various coil supports differing.

2. In a holder for tubular supports for coils of strand materials, thecombination with several annular retaining springs arranged in an axialrow for engaging the inner surface of a tubular coil support, arotatable driving spindle for said coil support, separate mountingsaxially displaceably arranged on said driving spindle for cooperationwith each of said annular springs, a conical rearwardly tapering portionon each of said mountings for cooperation with the correlated annularspring, a front abutment face on each of said mountings for the annularspring on the preceding mounting, and a holding spring acting axiallyrearwardly in the foremost mounting, of an abutment for said tubularcoil support adapted to bear against the annular spring on the rearmostmounting whereby each of said mountings forces the correlated annularspring outwards into engagement with said support, while the axialdisplacement of said foremost mounting effected by said holding springis transmitted to the other mountings, thus forcing all said annularsprings uniformly against said inner surface of said support.

3. In a holder for tubular supports for coils of strand materials, thecombination with several annular retaining springs arranged in an axialrow for engaging the inner surface of a tubular coil support, arotatable driving spindle for said coil support, separate mountingsaxially displaceably arranged on said driving spindle for cooperationwith each of said annular springs, a

conical rearwardly tapering portion on each of said mountings forcooperation with the correlated annular spring, a front abutment face oneach of said mountings for the annular spring on the preceding mounting,a holding spring acting axially rearwardly on the foremost mounting,thrust transmission means for axially displacing said foremost mountingagainst the action of said holding spring, an axially displaceable ringconnected with said transmission means, and a forked adjusting membercooperating with said ring, of an abutment for said tubular coil supportadapted to bear against the annular spring on the rearmost mountingwhereby each of said mountings forces the correlated annular springoutwards into engagement with said support, while during donning anddofling the supports said foremost mounting is displaced forwardly bysaid adjusting member for releasing said annular springs.

WALTER SIEGENTHALER.

